20531340300 has 216 divisors, whose sum is σ = 65148052480. Its totient is φ = 4986086400.

The previous prime is 20531340299. The next prime is 20531340307. The reversal of 20531340300 is 304313502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20531340307) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2683881 + ... + 2691519.

Almost surely, 2^20531340300 is an apocalyptic number.

20531340300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20531340300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32574026240).

20531340300 is an abundant number, since it is smaller than the sum of its proper divisors (44616712180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20531340300 is a wasteful number, since it uses less digits than its factorization.

20531340300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721 (or 7697 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

Adding to 20531340300 its reverse (304313502), we get a palindrome (20835653802).

The spelling of 20531340300 in words is "twenty billion, five hundred thirty-one million, three hundred forty thousand, three hundred".